Which does not show the Tyndall effect?

1. Emulsion

2. Blood

3. Milk

4. Sugar solution

Subtopic:  Colloidal Solution |
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Among the following surfactant molecules, the surfactant that forms micelles in aqueous solution at the lower CMC at ambient condition is:

1. CH3CH215N+CH33Br-

2. CH3CH211OSO3-Na+

3. CH3CH26COO-Na+

4. CH3CH211N+CH33Br-

Subtopic:  Emulsions |
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Butter is a colloid form in which:

1. fat is dispersed in solid casein

2. fat globules are dispersed in water

3. water is dispersed in fat

4. suspension of casein is in water

Subtopic:  Colloidal Solution |
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The cotterells precipitator is used to :

1. neutralize charge on carbon particles in air in smoke

2. coagulate carbon atoms of smoke

3. bring in cataphoresis in carbon particles

4. all of the above

Subtopic:  Adsorption and Absorption | Colloidal Solution |
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Foam is a colloidal solution of:

1. Gaseous particles dispersed in gas               

2. Gaseous particles dispersed in a liquid           

3. Solid particles dispersed in a liquid

4. Solid particles dispersed in gas

Subtopic:  Colloidal Solution |
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A liquid aerosol is a colloidal system of:

1. a liquid dispersed in a solid

2. a liquid dispersed in a gas

3. a gas dispersed in a liquid

4. a solid dispersed in a gas

Subtopic:  Colloidal Solution |
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A negative catalyst or inhibitor is one:

1. which retards the rate of reaction

2. takes the reaction in forward direction

3. promotes the side reaction

4. None of the above

Subtopic:  Catalyst |
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Alum helps in purifying water by:

1. Forming Si complex with clay particles.

2. Sulphate part which combines with the dirt and removes it.

3. Aluminium which coagulates the mud particles.

4. Making mud water soluble.

Subtopic:  Colloidal Solution |
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Which of the following does not form anionic micelle?

1. C12H25COONa                   

2. C12H25SO4Na

3. C12H25SO3Na                     

4. C12H25(NH3)3Cl

Subtopic:  Emulsions |
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Milk can be preserved by adding a few drops of?

1. Formic acid solution             

2. Formaldehyde solution

3. Acetic acid solution             

4. Acetaldehyde solution

Subtopic:  Emulsions |
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